CN108611991A - A kind of novel reinforced Old arch bridge structure - Google Patents
A kind of novel reinforced Old arch bridge structure Download PDFInfo
- Publication number
- CN108611991A CN108611991A CN201611180972.9A CN201611180972A CN108611991A CN 108611991 A CN108611991 A CN 108611991A CN 201611180972 A CN201611180972 A CN 201611180972A CN 108611991 A CN108611991 A CN 108611991A
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- CN
- China
- Prior art keywords
- arch
- steel
- bridge
- steel plate
- arch bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
Abstract
The invention belongs to bridge strengthening fields, and in particular to a kind of novel reinforced Old arch bridge structure and its construction method, including pontic 1 are equipped with epoxy resin mortar filled layer 4, and lateral stiffening steelframe is equipped on epoxy resin mortar filled layer 4 below pontic 1.It is connected with prefabricated box splicing steel plate 8 between arch rib, and applies prestressing force using deformed bar 9 between arch rib.Then casting concrete forms it into overall structure at arch springing, arch rib steel plate connecting pin and stretch-draw anchor anchorage.Finally to H profile steel 7, box splicing steel plate 8 and weld seam 5 carry out the preservative treatment such as paint.The lateral stiffening steel frame construction includes anchorage screw 2, anchor bolt 3, ribbed stiffener 6, H profile steel 7, structure of the invention technology reinforce arch bridge, and construction is simple is convenient, reinforcing expense is relatively low, dead weight increases less, and consolidation effect is good, and analysis is a kind of method of relatively inexpensive safe reinforcing arch bridge from structure stress.
Description
Technical field
The present invention relates to a kind of reinforcing Old arch bridge structures, belong to bridge strengthening field.
Background technology
With the development of society, the growth of the arch bridge length of service, the volume of traffic and vehicle load speed increase, cause arch bridge main body knot
There are different degrees of cracking diseases, followed by its bearing capacity to be gradually lowered for structure, is rebuild if old bridge all removed, this
It needs to spend a large amount of manpower and materials, government that can not bear, and also has a great impact to transformation traffic, therefore old bridge is added
Gu being just particularly important.In existing technology, the reinforcement means of arch bridge is mainly the following：
1. mitigating spandrel construction gravimetric method：The method is by using the arch fill of lightweight, longitudinal perforation, arch building on extrados
It is changed to light-duty the methods of board-like spandrel construction.The method advantage is can to mitigate dead load, infrastructure is wanted with reducing
It asks, while can also mitigate the burden of main arch ring.The disadvantage is that needs suspend traffic and cost is relatively high.
2. external prestressed strengthening method；The method is chiefly used in reinforcing beam bridge, and displacement is generated for arch ring cracking and abutment,
The reinforcing of this method can also be used in the arch bridge of vault downwarp.Its practice is：To the arch bridge of main arch ring longitudinal cracking, direction across bridge is set
Reinforcing pull rod applies prestressed reinforcement；To the arch bridge of main arch ring Transverse Cracks or abutment displacement, vault downwarp, then using along bridge to setting
It sets reinforcing bar or reinforcing pull rod applies prestressing force and reinforced.
3. shotcrete method for strengthening：Shotcrete reinforce have caking property is good, early strength is high, construction is quick and easy, adaptable, it is right
The features such as Coherent traffic noise is smaller.But anchor jet technology reinforces the concrete that the shortcomings that arch bridge is injection need to be by as load before solidification
Original structure undertakes, and the bearing capacity of structure is made to be affected；And arch bridge that there are later strengths is low, is unfavorable for bridge permanently makes
Defect.
4. other reinforcement means of Old arch bridge all exist as shortened across footpath method, set arch (Internal Lining Method), the methods of arched girder combination
Different degrees of deficiency, it is long in time limit.Cost is high or to suspend traffic.Traditional ruggedized construction and reinforcement means cannot be satisfied
Low cost, high quality, the requirement of efficient engineering project, are badly in need of a kind of convenient and quick construction, cost is relatively low, the reinforcing of high quality
Structural approach.
5. the present invention proposes a kind of novel reinforced Old arch bridge structure, have easy for construction, securely and reliably, stress performance is good
Feature.
Invention content
It is an object of the invention to overcome the defect of existing Arch Bridges Strengthening technology, a kind of construction convenient and efficient, cost are provided
It is low, accelerate the structural approach to bridge strengthening, it is proposed that a kind of novel reinforced Old arch bridge structure.
The technical scheme is that：H profile steel is pasted below pontic using epoxy resin mortar, and both ends each extend to arch
H profile steel pressurization hereinafter, be anchored on pontic by bridge spring line with pre-buried anchor bolt and anchorage screw, and by the H-type after anchoring
Steel welding is integral.It is connected with precast box shape steel plate between arch rib, and is answered in advance using deformed bar application between arch rib
Power.The holistic resistant behavior of arch bridge can be effectively raised, pontic local pressure situation is improved.This H profile steel has efficiently warp
Help sanction face proximate matter, and cross sectional shape is reasonable, and steel can be made higher to play efficiency, is effectively improved in the case of dead weight is relatively light and holds sanction energy
Power.
The beneficial effects of the invention are as follows；Effectively add with the good loading characteristic of lateral stiffening steelframe and arch bridge flexibility
Admittedly the principle handled uses lateral stiffening steel and reinforced to arch bridge, there is dead weight to increase little, construction is simple is convenient, adds
Gu it is at low cost, and the characteristics of do not influence traffic, with good economic efficiency and social benefit.It is spelled with box between arch rib
It connects steel plate and connects and apply prestressing force, it is effective to increase arch bridge load resistant power, to analyze it is also safer height from structure stress
A kind of Arch Bridges Strengthening method of effect.
Description of the drawings
Fig. 1 is novel reinforced Old arch bridge structural side view；
Fig. 2 is that lateral stiffening steelframe reinforces arch bridge structure cross-sectional view；
Fig. 3 is to reinforce connection structure cross-sectional view between Old arch bridge arch rib.
Wherein；Bridge 1 body, 2 anchorage screws, 3 anchor bolts, 4 epoxy resin mortar filled layers, 5 weld seams, 6 ribbed stiffeners, 7H shaped steel, 8
Precast box shape steel plate, 9 deformed bars, 10 steel plates, the stretch-draw anchor anchorage of 11 adjustable pretightning forces.
Specific implementation mode
The present invention is described in further details below in conjunction with the accompanying drawings：
For arch bridge as shown in Figure 1, using laterally plus between diameter steelframe and arch rib connecting, box splices steel plate and application is pre-
Stress is reinforced.First to surface have crack cleared up, the cementation of fissures or Seal treatment, H profile steel 7 is pasted with epoxy resin mortar
To former arch bridge bottom surface, and both ends extend to spring line or less.With the anchor bolt 3 and anchorage screw 2 being embedded on former pontic by H
The pressurization of shaped steel 7 is anchored on former arch bridge, and the welding of H profile steel 7 after anchoring is linked to be entirety, and ribbed stiffener is then welded on anchoring
In H profile steel 7 afterwards, lateral stiffening steelframe is formed.It is connected with prefabricated box splicing steel plate 8 between arch rib, and between arch rib
Apply prestressing force using deformed bar 9.Then coagulation is poured at arch springing, arch rib steel plate connecting pin and stretch-draw anchor anchorage 11
Soil forms it into overall structure.Finally to H profile steel 7, box splicing steel plate 8 and weld seam 5 carry out the preservative treatment such as paint.
In above-described embodiment, pastes and use high-strength steel with H profile steel 7, assembling is cut in advance by producer, and drills.Anchor spiral shell
Bolt 3 is all made of expansion bolt, and is embedded into pontic in advance.
In above-described embodiment, box splices steel plate 8 using high-strength steel, and can first be prefabricated in the factory assembly.It uses at both ends
Want advance reservation drilling for across deformed bar in the steel plate 10 of stretch-draw fixing anchor device.
In above-described embodiment, deformed bar 9 can with FRP tendons etc. other can prestretching material replace.
In above-described embodiment, using the special fast hardening sulphoaluminate cement concrete of steel fibre, have early by force, high tenacity is durable
The good feature of property, can reach working strength, can shorten the construction time, not interfere traffic in a short time.
As described above, the present invention can be realized.The present invention is not limited to the above embodiment, those skilled in the art are made
It is any to the above embodiment conspicuously improved or change, all without departing from the present invention design and appended claims
Protection domain.
Claims (3)
1. a kind of novel reinforced Old arch bridge structure, it is characterized in that：Epoxy resin mortar filled layer 4 is equipped with below the pontic, and
Lateral stiffening steel frame construction is equipped on epoxy resin mortar filled layer 4.It is connected with prefabricated box splicing steel plate 8 between arch rib, and
Apply prestressing force using deformed bar 9 between arch rib.Then at arch springing, arch rib steel plate connecting pin and stretch-draw anchor anchorage 11
Casting concrete forms it into overall structure.
2. lateral stiffening steel frame construction according to claim 1, characterized in that H profile steel is pasted to the ring below pontic
On oxygen filled layer 4, it is used in combination anchorage screw 2 and anchor bolt 3 to pressurize and anchors, ribbed stiffener 6 is welded in H profile steel 7.
3. casting concrete according to claim 1, characterized in that the special fast hardening sulphoaluminate cement of steel fibre has early
By force, high tenacity, the good feature of durability, the construction period is short, does not influence traffic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180972.9A CN108611991A (en) | 2016-12-13 | 2016-12-13 | A kind of novel reinforced Old arch bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180972.9A CN108611991A (en) | 2016-12-13 | 2016-12-13 | A kind of novel reinforced Old arch bridge structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108611991A true CN108611991A (en) | 2018-10-02 |
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ID=63657703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611180972.9A Pending CN108611991A (en) | 2016-12-13 | 2016-12-13 | A kind of novel reinforced Old arch bridge structure |
Country Status (1)
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| CN (1) | CN108611991A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487710A (en) * | 2018-12-19 | 2019-03-19 | 长沙理工大学 | A kind of Arch Bridges Strengthening method based on prefabrication and assembly construction principle |
| CN111560836A (en) * | 2020-05-20 | 2020-08-21 | 河北工业大学 | Construction method of arch bridge main arch and construction method of assembled arch bridge |
| CN111705622A (en) * | 2020-04-09 | 2020-09-25 | 赵瑞芬 | Self-resetting assembly type precast concrete arch bridge |
| CN111733685A (en) * | 2020-04-09 | 2020-10-02 | 赵瑞芬 | Prefabricated arched girder section at end part of self-resetting assembly type arched bridge and forming method thereof |
| CN111733684A (en) * | 2020-04-09 | 2020-10-02 | 赵瑞芬 | Self-resetting assembly type precast concrete arch bridge support |
| CN114016443A (en) * | 2021-08-12 | 2022-02-08 | 深圳大学 | Abdominal arch structure reinforced by frame type reinforcing structure |
| CN114086484A (en) * | 2021-11-16 | 2022-02-25 | 武汉理工大学 | Reinforcing method for additionally arranging prefabricated UHPC (ultra high performance polycarbonate) plate on back of arch leg of rigid frame arch bridge |
| CN115595901A (en) * | 2022-11-11 | 2023-01-13 | 广西大学（Cn） | Arch foot reinforcing method of deck type arch bridge based on cable structure |
-
2016
- 2016-12-13 CN CN201611180972.9A patent/CN108611991A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487710A (en) * | 2018-12-19 | 2019-03-19 | 长沙理工大学 | A kind of Arch Bridges Strengthening method based on prefabrication and assembly construction principle |
| CN109487710B (en) * | 2018-12-19 | 2024-02-27 | 长沙理工大学 | Arch bridge reinforcement method based on prefabricated assembly principle |
| CN111705622A (en) * | 2020-04-09 | 2020-09-25 | 赵瑞芬 | Self-resetting assembly type precast concrete arch bridge |
| CN111733685A (en) * | 2020-04-09 | 2020-10-02 | 赵瑞芬 | Prefabricated arched girder section at end part of self-resetting assembly type arched bridge and forming method thereof |
| CN111733684A (en) * | 2020-04-09 | 2020-10-02 | 赵瑞芬 | Self-resetting assembly type precast concrete arch bridge support |
| CN111560836A (en) * | 2020-05-20 | 2020-08-21 | 河北工业大学 | Construction method of arch bridge main arch and construction method of assembled arch bridge |
| CN111560836B (en) * | 2020-05-20 | 2021-02-09 | 河北工业大学 | Construction method of arch bridge main arch and construction method of assembled arch bridge |
| CN114016443A (en) * | 2021-08-12 | 2022-02-08 | 深圳大学 | Abdominal arch structure reinforced by frame type reinforcing structure |
| CN114016443B (en) * | 2021-08-12 | 2023-12-01 | 深圳大学 | Abdominal arch structure reinforced by frame type reinforcing structure |
| CN114086484A (en) * | 2021-11-16 | 2022-02-25 | 武汉理工大学 | Reinforcing method for additionally arranging prefabricated UHPC (ultra high performance polycarbonate) plate on back of arch leg of rigid frame arch bridge |
| CN115595901A (en) * | 2022-11-11 | 2023-01-13 | 广西大学（Cn） | Arch foot reinforcing method of deck type arch bridge based on cable structure |
| CN115595901B (en) * | 2022-11-11 | 2023-10-17 | 广西大学 | Method for reinforcing arch springing of upper bearing arch bridge based on cable structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181002 |
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| WD01 | Invention patent application deemed withdrawn after publication |